Windows Tool for Learning Signals and Systems Theory
ESYSTEM is a free program for experimenting with signals and systems. With ESYSTEM you can see the effect of simple systems on a range of simple signals. You can generate simple signals such as sinewaves, pulses, pulse trains, sawtooth and noise; you can pass them though systems such as an amplifier, a resonator, a low-pass, high-pass or band-pass filter, or a vocal tract model. You can observe the effect on the input and output waveforms and the input and output spectra. You can even replay the input and output sounds.
Read the ESYSTEM help file on-line.
New experimental browser version of ESystem!
Try out the new web version of ESystem. Chrome browser recommended.
New Signals and Systems Tutorial
Esystem now includes a comprehensive tutorial introduction to signals and systems theory using ESystem.
Download and Installation
SFS/ESYSTEM is only available by anonymous FTP from:
Want to learn more?
If you find the study of speech interesting, why not visit the Internet Institute of Speech and Hearing at www.speechandhearing.net ? There you will find tutorials, laboratory experiments, reference material, and details of e-mail lists and discussion groups.
Please send suggestions for improvements and reports of program faults to email@example.com.
ESYSTEM is not public domain software, its intellectual property is owned by Mark Huckvale, University College London. However ESYSTEM may be used and copied without charge as long as the program and help file remain unmodified and continue to carry this copyright notice. Please contact the author for other licensing arrangements. ESYSTEM carries no warranty of any kind, you use it at your own risk.